Problems with Feeling Pleasure

I don't know if this is normal, but I'm having trouble feeling pleasure during sex. The thing is that I get wet, but, unless it's really rough, I hardly feel anything. It's gone to the point where I fake my moans and I also haven't experienced an orgasm. I know everyone has a preference on how they like it during sex, but I don't know if it's normal to ONLY feel anything when it's rough. Is there a possible explanation to why this is happening to me? Any respond whatsoever would be greatly appreciated!